Texas Bike Race Map

Starts at 100, penalties per week window:

Rain: -0.8 per % rainy days
Above 100F: -0.6 per % (DQ if >15%)
Above 90F: -0.2 per % (DQ if >60%)
Below 24F: -0.6 per % (DQ if >15%)
Below 32F: -0.3 per % (DQ if >25%)

Grades by quartile rank among visible venues.

Thick white ring = p < 0.01 (99% confident spring ≠ fall)
Medium ring = p < 0.05 (95%)
Thin ring = p < 0.10 (90%)
No ring = not significant
Updates dynamically with year range.

A = Top 25% of venues
B = Next 25%
C = Next 25%
D = Bottom 25%

Multiplies the rain penalty. Surface type overrides USDA if set.

Granite 0.15× — immune to rain
Limestone 0.20× — sheds water fast
Sand 0.35× — drains well
Hardpack 0.55× — some mud possible
Loam 1.00× — average baseline
Clay 2.00× — mud disaster

Blank Surface_Type → USDA HSG used as fallback.
Set Surface_Type in Venues sheet to override.
Toggle soil on/off in ⚙ to compare.

• Ring = spring/fall difference is statistically significant
• Heat DQs Aug & Sep at most venues
• Year range filter rescores from raw daily data
• Force To + Month/Week filters work together
• Weather data: open-meteo.com
• Zippenfenig, Patrick. Open-Meteo.com Weather API. Zenodo, 2023.